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tankabanditka [31]
2 years ago
5

A person invested $220 in an account growing at a rate allowing the

Mathematics
2 answers:
Natasha_Volkova [10]2 years ago
8 0

Answer:

880?

Step-by-step explanation:

220X2= 440

440X2= 880

cupoosta [38]2 years ago
6 0

880, theres no change in between, only after every 13 years

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I NEED THESE DONE OR I WONT GET A GOOD GRADE!!!!!
djverab [1.8K]

Answer:

14.x=-2

21. x=-2

23. x=5

7.x=12

2.x=49

Step-by-step explanation:

I got your back bro:

14. Subtract 7 on both sides. Then divide -16 by 8.      x=-2

21. Add 1 on both sides. Divide 18 by -9. x=-2

23. Subtract 24 on both sides, then divide -25 by -5. your answer is x=5.

7. Add 2/5 on both sides. then multiply 2 2/5 by the reciprocal of -1/5. Your answer is x=12

2. Subtract 5 on both sides. Multiply 14 by the reciprocal of 2/7, or 7/2. Your answer is 49.

Good luck!


3 0
3 years ago
The life of light bulbs is distributed normally. The standard deviation of the lifetime is 15 hours and the mean lifetime of a b
Anastaziya [24]

Answer:

0.8413 = 84.13% probability of a bulb lasting for at most 605 hours.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The standard deviation of the lifetime is 15 hours and the mean lifetime of a bulb is 590 hours.

This means that \sigma = 15, \mu = 590

Find the probability of a bulb lasting for at most 605 hours.

This is the pvalue of Z when X = 605. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{605 - 590}{15}

Z = 1

Z = 1 has a pvalue of 0.8413

0.8413 = 84.13% probability of a bulb lasting for at most 605 hours.

7 0
3 years ago
Add the two complex numbers 6 + 7i and 10 + 2i. Write your answer as a complex number in standard form, a + bi.
lina2011 [118]

1. The complex number 6 + 7i has

  • real part 6;
  • imaginary part 7.

2. The complex number 10 + 2i has

  • real part 10;
  • imaginary part 2.

3. When we add two complex numbers, we add real parts and imaginary parts separately:

(6+7i)+(10+2i)=(6+10)+(7+2)i=16+9i.

Answer: 16+9i

8 0
3 years ago
Read 2 more answers
Which of the following numbers is between 0.08 and 0.4?
Delicious77 [7]

Answer:

C

Step-by-step explanation:

the numbers between 0.08 and 0.4 are:

0.09, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, .16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39

I bolded the number closest to your answer choices, hope this helps!

3 0
3 years ago
Evaluate the expression |3x-1| for x=-2
Andreyy89
The answer is 7
because the equation is |(3)(-2)-1|
3 0
3 years ago
Read 2 more answers
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